In the site I am building, I have business profiles, and they are linked by category and location. Is there a way to have the groups listed on the front page? So if you go to the site, you see as an example, Auto Repair, Electrical Contractors, Painters, etc.? Clicking on the category would show businesses in that category, and possibly be able to narrow by location as well.

Thanks.

you mean you created different lists of useres?

then you can just use the URL and place them in a content item or html module.
they will lead to the list overview.